OK, finally figured out what you have to do in order to have complete API access to your data on SLACK... I think! My goal: CREATE AN ALL-KNOWING CO-CEO/ORACLE WITH 100% ACCESS TO ALL MESSAGES ACROSS AN INSTANCE FOR ALL TIME (i.e. all 10+ years of our SLACK). You have to upgrade from Business+ to Enterprise+, which is 3x: you jump from $15 per person to $45 per person per month. Not the end of the world, but feels a bit unfair to have to pay 3x to get access to my own data! Has anyone else used all SLACK data to make THE CEO ORACLE?!?!!(@jason)